单选题

When a fire starts, the temperature increases and causes the detector to operate

A当火警启动时，温度增加并引起灭火器工作。

B当火焰开如时，温度增加并造成触发器工作，

C当起火时，温度升高并使探测器工作。

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正确答案：A （备注：此答案有误）

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